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[Bug middle-end/67438] [6 Regression] ~X op ~Y pattern relocation causes loop performance degradation on 32bit x86
- From: "rguenth at gcc dot gnu.org" <gcc-bugzilla at gcc dot gnu dot org>
- To: gcc-bugs at gcc dot gnu dot org
- Date: Fri, 04 Dec 2015 08:10:18 +0000
- Subject: [Bug middle-end/67438] [6 Regression] ~X op ~Y pattern relocation causes loop performance degradation on 32bit x86
- Auto-submitted: auto-generated
- References: <bug-67438-4 at http dot gcc dot gnu dot org/bugzilla/>
https://gcc.gnu.org/bugzilla/show_bug.cgi?id=67438
--- Comment #14 from Richard Biener <rguenth at gcc dot gnu.org> ---
Author: rguenth
Date: Fri Dec 4 08:09:46 2015
New Revision: 231245
URL: https://gcc.gnu.org/viewcvs?rev=231245&root=gcc&view=rev
Log:
2015-12-04 Richard Biener <rguenther@suse.de>
PR middle-end/67438
* match.pd: Guard ~X cmp ~Y -> Y cmp X and the variant with
a constant with single_use.
Modified:
trunk/gcc/ChangeLog
trunk/gcc/match.pd